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Feature comparison of selected websites
	Together AI Fast, affordable open-model inference.	OpenRouter One API for every LLM.	Groq The fastest LLM inference, free to start.
Rating	—	—	—
Pricing	Paid	Freemium	Freemium
Open source
Category	LLM APIs	LLM APIs	LLM APIs
Key features	200+ open models Fine-tuning and dedicated endpoints OpenAI-compatible API	One key for 300+ models OpenAI-compatible endpoint Free models and price routing	Sub-second token streaming OpenAI-compatible API Generous free tier
Pros	Cheap tokens at scale Strong model selection	Swap models without changing code Free tier covers real prototyping	Astonishingly fast responses Free tier is genuinely usable
Cons	No always-free tier (credits) Less known than the majors	Adds a small routing margin Free models are rate-limited	Open models only Rate limits on the free tier
	Visit together.ai	Visit openrouter.ai	Visit groq.com

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